21 Examples of Human Body Organs

The organs of the human body they are sets of tissues that perform a specific function in the system. It is an anatomical and functional unit, that is, a series of tissues that perform several functions together. For example: stomach, heart, lung, liver.

The number of organs that the human body possesses is twenty, and each one of them fulfills a fundamental and important function for the proper functioning of the organism.

The organs make up the structural characterization that is made of the body, observing the functional units most important and deducing which are the most important functions of each of them.

The functional organization of the body is the alternative, which rather analyzes the actions carried out by the human body (systems and devices) and based on that thinks the structures that are organized to fulfill those functions.

organ structure

The organ structure it varies according to the case, being smaller or larger according to the functions that it must have in the body, and the eventual storage that it must do.

Physically, however, organs are classified as solid (having an inner and outer part) and membranous or hollow (having hollow sac morphology).

organ donation

When a person dies, some of their organs may still be able to function and even medicine has been able to create transfusions.

That is why today people can explicitly declare their will to donate organs to those who need it, so that when they die, their organs can be used in transplants (if the receiving body accepts compatibility).

Complete list of organs of the human body

Next, the twenty-one organs of the human body will be mentioned, with a brief explanation of the functionality of each of them.

  1. Stomach. Organ responsible for crushing food, turning it into porridge, so that it then passes to the intestine.
  2. Tongue. Mobile organ that performs functions such as hydration of the mouth and the food that enters it.
  3. Brain. Central part of the nervous system, with all the cognitive and emotional functions, in addition to the control of some vital activities such as movement.


  1. Lung. Organ responsible for carrying out respiration, that is, the gaseous exchange between air and blood, in the case of animals that carry out direct breathing.
  2. Heart. Main organ of the circulatory system, which functions as a blood pump, distributing it throughout the body.
  3. Eye. Visual organ that detects light, and converts it into impulses that travel to neurons, enabling vision.
  4. Hearing. Set of organs with the function of providing balance and hearing to the body.


  1. thymus. Organ of the immune system, responsible for promoting the development of T lymphocytes, white blood cells that protect against foreign organisms.
  2. Liver. Glandular organ of man and other vertebrates, which secretes bile and stores nutrient substances, in addition to eliminating toxic substances.
  3. Urinary bladder. Organ that receives urine, stores it and expels it through the urethra to the outside of the body.
  4. Pancreas. Organ responsible for producing enzymes that help digestion, and also produces hormones or substances that circulate throughout the bloodstream.
  5. Spleen. Vascular viscera of many vertebrates, with functions related to the blood and the immune system.
  6. muscles. Tissues that generate movement by contracting or extending. They are attached to the skeleton by tendons.

Anatomy.  Body.

  1. Clitoris. Female sexual organ, which works rhythmically together with other parts of the interior of the vagina.
  2. Uterus. Organ where pregnancy occurs, being the largest of the organs of the female reproductive system.
  3. testicles. Glandular organs that form the most important part of the male reproductive system.
  4. Prostate. Gland that secretes a fluid that stimulates sperm movement.
  5. Penis. Copulatory and urinary organ of man, and other male animals.
  6. Kidneys. Glandular organ located in the lumbar region, with the function of secreting urine.
  7. ovaries. Female reproductive organ, secreter of sexual hormones and ovules.
  8. Bones. Firm, hard and resistant organs that are part of the endoskeleton of vertebrates. It is what gives the body the structure it has.

Spine.  Bones.